In Greek mythology, Orestes or Orestis was the son of Agamemnon and Clytemnestra, and the brother of Electra and Iphigenia. He was also known by the patronymic Agamemnonides (Ἀγαμεμνονίδης), meaning "son of Agamemnon." He is the subject of multiple Ancient Greek plays and myths, in particular Aeschylus' Oresteia, which depict his revenge, madness, and purification, which retain obscure threads of much older works.